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5-day forecast / McKinney, TX

MondaySlight Chance Showers And Thunderstorms91° / 73° 18%
TuesdayMostly Sunny94° / 74° 11%
WednesdayMostly Cloudy then Chance Showers And Thunderstorms93° / 73° 45%
ThursdayShowers And Thunderstorms84° / 70° 89%
FridayChance Showers And Thunderstorms80° / 67° 73%

McKinney Weather: Humid Afternoon, Air Quality Alert Active - Sep 28, 2 PM

McKinney weather, updated every four hours — local forecasts you can trust.

McKinney residents face a humid afternoon with an active air quality alert. Temperatures will reach 91F today, with a slight chance of storms. Tomorrow brings hotter conditions with heat indices near 100F.

Cody Esparza

September 28, 20261 min read

National Weather Service radar for North Texas (KFWS)

*As of Sep 28, 2 PM local time.*

Current Conditions and Air Quality

An active Air Quality Alert is currently in effect for the McKinney area, issued by the National Weather Service. While the severity and urgency details are not specified in the current data, residents should remain aware of potential respiratory impacts. The local atmosphere is notably humid right now, with a dew point of 73F and relative humidity at 84%.

The air temperature stands at 79F, though it feels like 82F due to the moisture content. Winds are blowing from the southeast at 8 mph, with gusts reaching 11 mph, and the sky remains mainly clear.

Today and Tonight Outlook

The day will remain mostly sunny, with a high near 91F. There is a slight chance of showers and thunderstorms, with a precipitation probability of 18%. As evening approaches, the chance of storms persists before 7 pm, with a 20% likelihood of precipitation.

The temperature will drop to a low around 73F. Winds will shift to a southeast direction, ranging from 5 to 10 mph. The overall pattern suggests a warm, muggy evening with limited rain risk.

Tomorrow's Forecast

Tomorrow will be warmer, with a high near 94F and a low around 74F. The sky will be mostly sunny, and the chance of precipitation drops to 11%. However, the heat index values are expected to reach as high as 100F, making the air feel significantly hotter than the actual temperature.

Winds will come from the south-southeast at 5 to 15 mph, with gusts potentially reaching 25 mph. Given the high humidity and heat index, it is advisable to stay hydrated and limit strenuous outdoor activities during the peak afternoon hours. Check on neighbors who may be sensitive to heat and air quality changes.

National Weather Service radar for North Texas (KFWS)

Sources

National Weather Service radar

National Weather Service forecast data

Open-Meteo weather data

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Cody Esparza

Cody Esparza covers McKinney city hall, the council, and county government.

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